Ice Core Drilling and the Related Observations at SE-Dome site, southeastern Greenland Ice Sheet

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  • Ice Core Drilling and the Related Observations at SE-Dome site, southeastern Greenland Ice Sheet（グリーンランド南東ドームにおけるアイスコア掘削と気象・雪氷観測）

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<p>In order to construct reliable deposited-aerosol database on the Anthropocene (from 1850 to 2020), we obtained a 250-meter-long ice core from the Southeastern Greenland Dome on May and June 2021, where is one of the highest accumulation domes in Greenland. The age of the ice core at a depth of 250 m was roughly estimated to be AD 1827 based on the timescale from a previously analyzed shallower ice core. The age of the sampled ice core satisfied the prerequisite conditions for constructing aerosol deposition database for Anthropocene. In addition, surface elevation, borehole temperatures, and internal stratigraphy of the ice sheet were performed, and meteorological and snow-pit observations were also conducted. Furthermore, we sampled aerosol and snow from the ice sheet for chemical and physical analyses.</p>

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